On Sat, Apr 6, 2024 at 8:26 AM Douglas Taylor via cctalk <cctalk@classiccmp.org> wrote: > > On 4/6/2024 11:14 AM, Tony Duell via cctalk wrote: > > On Sat, Apr 6, 2024 at 3:54 PM Douglas Taylor via cctalk > > <cctalk@classiccmp.org> wrote: > >> The DEC VT340 has a slot in the back of the terminal to insert a ROM > >> cartridge. I can't find any description of what this DEC labeled ROM > >> cartridge would do for you. I've seen them with V1.1 and V2.1 markings, > >> does anyone remember what additional capabilities these ROM cartridge > >> provide? > > Will the terminal work at all without that cartridge fitted?. I've had > > a quick look at the VT330 and VT340 printsets and I can't obviously > > spot any firmware ROMs on the main board schematics. So my first guess > > is that said cartridge is the terminal firmware. > > > > -tony > > Hmm, I have a VT340 that seems to pass POST but no video. It does have > a cartridge inserted into the slot, you may be exactly correct. > > Doug
The VT340 I have does not have an opening on the back where the ROM slot would be. Maybe the ROM card is still there in that location, but the back cover molding was changed to remove the user accessible slot. I'd have to pull the cover off to see if the ROM board is still in that location. The VT330 I have does have a removable ROM card. That one might be a pre-production unit. Instead of mask ROMs it has EPROMs, and the manuals it came with are not production level manuals.
